Review

Which are the main organs in the respiratory system?

• Heart

• Stomach

• Lungs

• Nose

When we breathe, we take in ....

• nitrogen

• carbon dioxide

• oxygen

• hydrogen

What is the main function of the respiratory system?

• to provide oxygen and remove carbon dioxide from the body
• to bring oxygen to the body
• to break down food and absorb nutrients
• to remove oxygen from the body and deliver carbon dioxide

The brain controls the body's functions.

• True

• False

What is the function of the nervous system.

• provide nutrients for the body.
• send and recieve messages
• circulate oxygen to sells
• remove carbon dioxide from blood

The excretory system rids the body of ______ waste.

• solid
• liquid

What is the main function of the excretory system?

• to collect and remove wastes from the body
• to strengthen skeletal muscles
• to protect the nervous system
• to bring oxygen to body cells

Where does digestion begin?

• Our teeth

• Our stomach

• The esophogus

• Small intestines

Which part carries food into your stomach?

• esophagus
• mouth
• trachea
• vessels

Nutrients from digested food are absorbed in which digestive organ?

• Small Intestine
• Stomach
• Large Intestine
• Gallbladder